---
title: Discover payable services
description: An index of services advertising stablecoin payments over x402 and MPP, with HTTP endpoints probed for payment-challenge signals. Public JSON API, no key needed.
canonical: https://staging-next.superstables.com/discover
last-updated: 2026-10-15
---

# Discover payable services

> Right now, 1445 of 3313 listed services are actively responding: they returned HTTP 402 or another detected payment-challenge signal at their last probe.

Browse services AI agents can pay for and earn on with stablecoins, from data and compute to RWA yield and
tokenized stocks.

This is the first 100 of 3313 services, ordered live first, then most recently seen live.
The full index: [JSON API](https://staging-next.superstables.com/api/v1/services) (filters: rail, chain, asset, live=true, q, limit, offset),
[whole index as JSONL](https://staging-next.superstables.com/feeds/services.jsonl), [OpenAPI spec](https://staging-next.superstables.com/openapi.json).

Try budgets or single purchases with [services you can try on testnet](https://staging-next.superstables.com/testnet.md).
An agent that can only send HTTP requests can follow [Superstables for agents](https://staging-next.superstables.com/agents.md).

| Service | Rails | Chains | Assets | Status | Description |
| --- | --- | --- | --- | --- | --- |
| [1gateway](https://staging-next.superstables.com/s/1gateway.dev) | x402 | base | USDC | challenge detected | Use when scheduling across time zones or turning a local time into UTC without guessing DST. Input: to (IANA zones or KS |
| [3HZ Daily FX Reference Rate](https://staging-next.superstables.com/s/wallet-services-poc-clean-mainnet.3hz-services.workers.dev) | x402 | base | USDC | challenge detected | Daily reference foreign-exchange rate for any supported fiat currency pair using Frankfurter/ECB reference data. Query b |
| [AestheticData](https://staging-next.superstables.com/s/api.aestheticdata.io) | x402 | base | USDC | challenge detected | Curated aesthetic-medicine brand directory, partially verified. One call returns the full core catalog of filler, toxin, |
| [agdata](https://staging-next.superstables.com/s/agdata.shveik.dev) | x402 | base, polygon, solana | USDC | challenge detected | Keyword search on Amazon.com (US store): up to 20 products per call, each filled in from its product page. Body: {query, |
| [AgentCheck](https://staging-next.superstables.com/s/agentcheck-kohl.vercel.app) | x402 | base | USDC | challenge detected | AgentCheck: independent report on an x402 seller before you pay it. Are its buyers real (repeat wallets on their own mon |
| [Agent Council](https://staging-next.superstables.com/s/council.cyberwarex.com) | x402 | base | USDC | challenge detected | The grounded council: we buy the facts first, then deliberate on them. Your question is scanned for a contract address,  |
| [agentdatafeed](https://staging-next.superstables.com/s/agentdatafeed.com) | x402 | base | USDC | challenge detected | Security advisories: Use when a user asks whether a CVE is actively exploited, which vulnerabilities in a vendor or prod |
| [Agent Hub](https://staging-next.superstables.com/s/agents.torbrooknews.com) | x402 | arbitrum, base, eip155:480, polygon | EURC, USDC | challenge detected | IP address and ASN lookup from the internet registries (RDAP): network name and range, owning organization, country, ori |
| [AgentTools](https://staging-next.superstables.com/s/agentstoolshub.com) | x402 | base | USDC | challenge detected | Returns the current date and time in any IANA time zone, plus Unix seconds/milliseconds, ISO 8601, weekday and day-of-ye |
| [AGENTUM — APIs Brasil (CNPJ, CEP, Taxas)](https://staging-next.superstables.com/s/agentum.lat) | x402 | base | USDC | challenge detected | Mesmo dado do /taxas-brasil (Selic, CDI, dólar comercial) — rota técnica liquidada pelo Facilitador CDP da Coinbase, só  |
| [agpay](https://staging-next.superstables.com/s/agpay.shveik.dev) | x402 | base | USDC | challenge detected | Payments held between two agents: the buyer pays by x402 or MPP, the seller proves its wallet and delivers, the buyer co |
| [agri.halowerk.com](https://staging-next.superstables.com/s/agri.halowerk.com) | x402 | base | USDC | challenge detected | Builds parallel passes over an axis-aligned rectangle using supplied swath width and overlap, alternating travel directi |
| [AISkills402 API: Bulgarian Latin](https://staging-next.superstables.com/s/api.aiskills402.com) | x402 | base | USDC | challenge detected | Bulgarian Transliteration API: Cyrillic to Latin by the official Bulgarian system (Transliteration Act 2009), not ISO 9  |
| [AllTheBot Token price (USD)](https://staging-next.superstables.com/s/api.zkrobotics.fr) | x402 | base | USDC | challenge detected | Crypto token price in USD: live price of ETH, BTC (cbBTC), DAI, AERO or any Base token address, from on-chain DEX pools  |
| [Annalist](https://staging-next.superstables.com/s/api.annalist.dev) | x402 | base | USDC | challenge detected | Use before connecting a remote MCP server: independent checks by registry name or URL. Uptime and connect time from dail |
| [api.aurelianflo.com](https://staging-next.superstables.com/s/api.aurelianflo.com) | x402 | base | USDC | challenge detected | Exact-match OFAC wallet screening and crypto wallet sanctions check for sanctioned digital currency addresses. Screens o |
| [api.craigmbrown.com](https://staging-next.superstables.com/s/api.craigmbrown.com) | x402 | base, eip155:196 | USDC | challenge detected | Fast real-time news scan across 44+ curated domains (configs/search_domain_profiles.json), every item source-attributed. |
| [api.melvea.com](https://staging-next.superstables.com/s/api.melvea.com) | x402 | base | USDC | challenge detected | Grounded honey recommendations: send a flavor/use/occasion intent, receive ranked varieties chosen from Melvea's proprie |
| [api.newsgurus.ai](https://staging-next.superstables.com/s/api.newsgurus.ai) | x402 | base | USDC | challenge detected | News Gurus Intel API — liveness probe: per-agent intelligence output counts over the last 24h with last-seen timestamps, |
| [api.slamai.dev](https://staging-next.superstables.com/s/api.slamai.dev) | x402 | base | USDC | challenge detected | Returns trending tokens across the entire blockchain for a specified activity window and optional category. The size of  |
| [api.vetpulse.theaslangroupllc.com](https://staging-next.superstables.com/s/api.vetpulse.theaslangroupllc.com) | x402 | bnb | USD1 | challenge detected | State/regional veteran benefits guide for veteran and VA-benefits agents. Returns the complete list of state (US), devol |
| [AQL PropertyCheck](https://staging-next.superstables.com/s/agents.alphaquantlabs.ai) | x402 | base, polygon, solana | USDC | challenge detected | AQL PropertyCheck full report for one City of Gold Coast or Brisbane City address: the property and what surrounds it, w |
| [Automaton Colony](https://staging-next.superstables.com/s/colony.automatoncolony.xyz) | x402 | base | USDC | challenge detected | The cheapest way to test an x402 payment loop end to end. Returns the current Base block number and its hash. No paramet |
| [base-chain-gas-oracle](https://staging-next.superstables.com/s/market.561.group) | x402 | base | USDC | challenge detected | Current Base network gas price, read live from a public Base RPC node (eth_gasPrice) and returned in both wei and gwei w |
| [Base Token Verdict](https://staging-next.superstables.com/s/ari001.tailb4ac3a.ts.net) | x402 | base | USDC | challenge detected | Base ERC-20 verdict of a token contract address. Returns: an AI-written token verdict on one token contract: grade (BASE |
| [Blockchain.info API](https://staging-next.superstables.com/s/api.blockchain.info) | x402 | base | USDC | challenge detected | Paid AI-agent access to Blockchain.com Explorer API |
| [BR Intelligence](https://staging-next.superstables.com/s/br-intelligence.brverify-api.workers.dev) | x402 | base | USDC | challenge detected | Brazilian bank lookup by COMPE code or ISPB: short name and full legal name (Central Bank registry). |
| [canary.countersignpay.com](https://staging-next.superstables.com/s/canary.countersignpay.com) | x402 | base | USDC | challenge detected | Current Base mainnet block height and base fee per gas in wei, read from the chain at request time |
| [Chile Procurement Intel](https://staging-next.superstables.com/s/exp-100k-001-v2.vercel.app) | x402 | base | USDC | challenge detected | Find and rank Chile hospital buyers and public health-service buyers for medical equipment. Returns named buyer leads, b |
| [ClearCheck](https://staging-next.superstables.com/s/loonie-toll.onrender.com) | x402 | arbitrum, base, polygon, solana | USDC | challenge detected | Federal disaster declarations for a US state or county: what is open now, incident types, and how recent. |
| [Company Registry Lookup](https://staging-next.superstables.com/s/companies.use.x402atlas.com) | x402 | arbitrum, base, polygon, solana | USDC | challenge detected | Belgian company lookup in the official KBO/BCE Crossroads Bank for Enterprises (Daily data) by enterprise number (0417.4 |
| [Contract Safety Checker](https://staging-next.superstables.com/s/node-starter--maxujon18.replit.app) | x402 | base | USDC | challenge detected | x402 v2 paid EVM token contract risk API on Base and BSC. For 0.01 USDC, returns EIP-1967 proxy detection, owner control |
| [CORE JSON Validator](https://staging-next.superstables.com/s/api.coregroupimmo.com) | x402 | base | USDC | challenge detected | Use this service before importing or publishing JSON to check it against a restricted draft-07 schema. Send dataJson and |
| [d21 crypto_news](https://staging-next.superstables.com/s/draconic21-x402-api.onrender.com) | x402 | base, solana | USDC | challenge detected | Crypto News ($0.001 -- matches the category-leading incumbent's price exactly): fixed, no-required-params crypto headlin |
| [DEBYKO](https://staging-next.superstables.com/s/api.debyko.com) | x402 | base | USDC | challenge detected | Latest ticker, mark, funding, open interest and depth-derived values for crypto perpetuals on 16 venues, each with venue |
| [Degenscan Intel](https://staging-next.superstables.com/s/intel.degenscan.io) | x402 | base, solana | USDC | challenge detected | Active Hyperliquid perp markets by dex (main + HIP-3: xyz, io, para, mkts…) and the count of delisted ones. Market data  |
| [dev-5090 uncensored inference](https://staging-next.superstables.com/s/biz-integral-pull-earrings.trycloudflare.com) | x402 | base | USDC | challenge detected | Fix broken JSON (trailing commas, single quotes, unquoted keys). Returns only valid JSON. |
| [Easy Reader AI](https://staging-next.superstables.com/s/agent-reader.gm-tools.workers.dev) | x402 | base | USDC | challenge detected | Fetch a public web page and return only its metadata: title, description, canonical URL, language, site name, author, pu |
| [Edge Agents AI](https://staging-next.superstables.com/s/pay.edge-agents.ai) | x402 | arbitrum, base, polygon, solana, xrpl:0 | USDC | challenge detected | Latest available Türkiye central government debt plus a comparable annual history from the World Bank World Development  |
| [ENTROPY.RIP](https://staging-next.superstables.com/s/entropy.rip) | x402 | base | USDC | challenge detected | Generate cryptographic random bytes |
| [Event Risk - Next 7 Days](https://staging-next.superstables.com/s/www.blockchainiq.co) | x402 | base | USDC | challenge detected | Scheduled market-moving events for the next 7 days by default (?days= up to 90): US data releases with release times (CP |
| [Eve's Wire](https://staging-next.superstables.com/s/www.watchevelive.com) | x402 | arbitrum, avalanche, base, eip155:130, eip155:1329, eip155:146, eip155:480, eip155:5042, eip155:5042002, eip155:999, ethereum, optimism, polygon | USDC | challenge detected | Eve’s RWA print: which official number is the actual (T-bill, gold, NAV). Call for official prints, not casino coins. |
| [geo.halowerk.com](https://staging-next.superstables.com/s/geo.halowerk.com) | x402 | base | USDC | challenge detected | Enumerates XYZ tile coordinates intersecting a WGS84 bounding box. Missing facts are returned as null and named in unava |
| [gigsai](https://staging-next.superstables.com/s/gigsai.xyz) | x402 | base | USDC | challenge detected | Call when you need the readable content of a public web page: returns clean markdown (title, headings, lists, links; scr |
| [Google Trends Interest by Region](https://staging-next.superstables.com/s/keywords.duoleads.com) | x402 | base | USDC | challenge detected | Google Trends interest by region for one keyword: 0-100 interest per subregion of a country (or per country worldwide),  |
| [GridHub Electricity Data](https://staging-next.superstables.com/s/api.grid-hub.app) | x402 | base | USDC | challenge detected | Current headline values (price, demand, and where published carbon intensity) for all 25 GridHub zones in one call. Use  |
| [Hyperliquid Funding Oracle](https://staging-next.superstables.com/s/hlfundingrate.xyz) | mpp | tempo | USDC | challenge detected | Real-time Hyperliquid perpetuals funding rate intelligence. Four paid endpoints covering snapshot, per-asset deep analys |
| [InboxGuards Email Test](https://staging-next.superstables.com/s/api.inboxguardstest.com) | x402 | base | USDC | challenge detected | InboxGuards Email Test: Email security fix plan: the exact SPF, DKIM and DMARC records to publish, with steps for your D |
| [Infoharmoni Atlas Pro export](https://staging-next.superstables.com/s/ausrine-who.onrender.com) | x402 | base, solana | USDC | challenge detected | Infoharmoni Atlas Pro, sellers.csv: Every x402 seller in today's registry snapshot, one row each: what it sells, its pri |
| [Isocast](https://staging-next.superstables.com/s/api.isocast.dev) | x402 | base | USDC | challenge detected | Latest observed weather signal for one city — a single-signal SPOT snapshot (like a market-data quote). Flat $0.01, paya |
| [k-data-x402-production.theblack1022.workers.dev](https://staging-next.superstables.com/s/k-data-x402-production.theblack1022.workers.dev) | x402 | base | USDC | challenge detected | Current USD/KRW exchange rate (ECB reference via Frankfurter, fallback open.er-api.com). |
| [Kertivo Logs](https://staging-next.superstables.com/s/logfilter.hectichustle.workers.dev) | x402 | base | USDC | challenge detected | Filter a JSON/NDJSON event log by field/operator/time range; returns matching events. Use when an agent needs to pull ma |
| [LLM Pricer](https://staging-next.superstables.com/s/llmpricer.xyz) | mpp | tempo | USDC | challenge detected | Compares per-token API pricing across LLM providers (Anthropic, OpenAI, Google, Mistral, xAI, DeepSeek) for a given inpu |
| [MACH Base](https://staging-next.superstables.com/s/api.mach.gallery) | x402 | base | USDC | challenge detected | Check Base chain progress: return the latest mainnet block number for freshness checks and polling. This is not transact |
| [makememoneynomistakes](https://staging-next.superstables.com/s/makememoneynomistakes.ai) | x402 | base | USDC | challenge detected | Independent scoreboard of ERC-8004 agents on Base: a page of up to 100 agents with score 0-100, verdict LEGIT, SUS or BO |
| [ManyLives Onchain](https://staging-next.superstables.com/s/api.manylives.me) | x402 | base, solana | USDC | challenge detected | Use before sending a transaction on the Base network: current Base network gas: base fee, suggested priority fee and max |
| [Market Intelligence API](https://staging-next.superstables.com/s/api.marketintelligenceapi.com) | x402 | arbitrum, base, base-sepolia, eip155:480, polygon, solana | EURC, USDC | challenge detected | Tokenized treasuries and RWA flows: supply and 24h/7d net issuance of tokenized treasury funds (BlackRock BUIDL, Ondo US |
| [Maxwell x402](https://staging-next.superstables.com/s/api.maxwellinternational.ai) | x402 | base, solana | USDC | challenge detected | Laws of Austria from RIS (Rechtsinformationssystem): search by title, or fetch one act by its official id, with title, i |
| [MentionForge](https://staging-next.superstables.com/s/mentionforge.mentionforge.workers.dev) | x402 | base | USDC | challenge detected | Brand monitoring, brand sentiment analysis and social listening for a company, product, or competitor. Returns cited soc |
| [Messy Virgo](https://staging-next.superstables.com/s/api.messyvirgo.com) | x402 | base | USDC | challenge detected | The scorecard plus Messy Virgo's analyst verdict: one overall verdict (strong signal, watch, weak or red flag) with its  |
| [n0brains](https://staging-next.superstables.com/s/api.n0brains.com) | x402 | base | USDC | challenge detected | Current cross-asset macro conditions for crypto: liquidity, volatility, rates and upcoming calendar risk (CPI, FOMC, etc |
| [NBU Data Ukraine](https://staging-next.superstables.com/s/nbu.navistri.com) | x402 | base | USDC | challenge detected | National Bank of Ukraine key policy rate (облікова ставка) on a date, with the overnight deposit and overnight loan rate |
| [Ni Biashara — Africa FX & services for agents](https://staging-next.superstables.com/s/agents.nibiashara.biz) | x402 | base | USDC | challenge detected | Official FX rates — all eight pairs. All eight official reference rates vs USD in one payload, via Frankfurter (frankfur |
| [Nimbus](https://staging-next.superstables.com/s/nimbus.clawca.sh) | x402 | base | USDC | challenge detected | Current weather for a city or lat/lon: temperature, humidity, wind, conditions. After your call, please rate this servic |
| [nohumans.directory](https://staging-next.superstables.com/s/api.nohumans.directory) | x402 | base | USDC | challenge detected | What AI agents search for when they look for paid APIs and data: the last 30 days of searches on nohumans.directory, ref |
| [nutripulse.theaslangroupllc.com](https://staging-next.superstables.com/s/nutripulse.theaslangroupllc.com) | x402 | bnb | USD1 | challenge detected | GLP-1 nutrition companion — deterministic protein target (1.2-1.6 g/kg; 1.5 g/kg fat-free mass when body fat is known),  |
| [NZ Data API](https://staging-next.superstables.com/s/nzdata.zakwins.workers.dev) | x402 | base | USDC | challenge detected | Validate and normalise an NZ phone number to E.164 with type |
| [Obol](https://staging-next.superstables.com/s/obol.danieldutoit.net) | x402 | base | USDC | challenge detected | Base network block status reconciled after payment across two pre-probed distinct-operator RPC endpoints |
| [offercheck](https://staging-next.superstables.com/s/offercheck.offercheck.workers.dev) | x402 | base | USDC | challenge detected | Verify the live price and availability of a product at a URL before you buy or quote it. Fetches the page now, extracts  |
| [Onvexia](https://staging-next.superstables.com/s/onvexia.com) | x402 | base | USDC | challenge detected | Topic ranking. Ranked social topics for a window. Returns topics + window_hours. |
| [OrcaTrace](https://staging-next.superstables.com/s/api.orcatrace.dev) | x402 | base | USDC | challenge detected | Paid ($0.01 USDC via x402). Most recent Polymarket feed item — mover, whale entry (with calibration), or predetermined s |
| [Overwing](https://staging-next.superstables.com/s/overwing.ai) | x402 | base | USDC | challenge detected | Overwing guardrail: check text before you send, post, or act on it. Content moderation, PII detection, confidential leak |
| [Paxie.Matrix Data API](https://staging-next.superstables.com/s/api.paxie.fun) | x402 | base, solana | USDC | challenge detected | Solana pump.fun bonding-curve buyer bursts from the last 1-240 minutes, on pump.fun tokens 5 min to 4 h old that show cu |
| [paygentic](https://staging-next.superstables.com/s/api.discoverdmc.cloud) | x402 | base | USDC | challenge detected | Fetch any http(s) URL and return clean markdown of the page. Saves agents tokens versus raw HTML. Input: url. |
| [Pique Signal](https://staging-next.superstables.com/s/piquesignal.xyz) | x402 | solana | USDC | challenge detected | We catch Solana memecoins early: 7,400+ coins hit 5x, 3,400+ hit 10x and 246+ hit 100x from our first flag (all-time, Oc |
| [Plainsight](https://staging-next.superstables.com/s/shop.netlobo.com) | x402 | base | USDC | challenge detected | Live crypto prices: USD spot for BTC, ETH and SOL in one call, fetched per call (not cached), so the figure is the numbe |
| [presign-guard](https://staging-next.superstables.com/s/presign-guard.fizzl.eu) | x402 | algorand:wghe2pwdvd7s12bl5faop20egyesn73ktic1qzkkit8=, base, solana, xrpl:0 | USDC | challenge detected | Is this token safe to buy, or a honeypot or rug pull? Checks a Solana or EVM token before you buy, hold or accept it (mi |
| [prop.halowerk.com](https://staging-next.superstables.com/s/prop.halowerk.com) | x402 | base | USDC | challenge detected | Multiplies each mutually exclusive supplied scenario probability by its supplied damage fraction and asset replacement v |
| [RSoft Bank](https://staging-next.superstables.com/s/7mavs5vu7ggbhtxvbavdgs26qa0cbawg.lambda-url.us-east-1.on.aws) | x402 | base | USDC | challenge detected | Live USDC lending rates of RSoft Bank, a real lender for AI agents on Base mainnet. Call it before requesting a loan or  |
| [safepulse.theaslangroupllc.com](https://staging-next.superstables.com/s/safepulse.theaslangroupllc.com) | x402 | bnb | USD1 | challenge detected | Global product safety alerts for consumer and safety agents. Consolidates WHO, Health Canada, ACCC Australia, and UK OPS |
| [Sato Hub](https://staging-next.superstables.com/s/satohub.ai) | x402 | base, solana | USDC | challenge detected | The weekly agent-economy series behind Sato Hub's free current-week counts: one row per venue, chain, stage and week, me |
| [Signalis](https://staging-next.superstables.com/s/api.signalis.dev) | x402 | base | USDC | challenge detected | Paid ($0.01 USDC via x402). Active AI-business narratives with lifecycle stage, driving sources, and momentum. Proxied f |
| [Singapore ACRA Company Registry](https://staging-next.superstables.com/s/data.finery.cc) | x402 | base | USDC | challenge detected | Search Singapore MOE schools by name or postal code (optional level filter). Results include the school directory joined |
| [SiteCheck](https://staging-next.superstables.com/s/api.sitecheck-api.workers.dev) | x402 | base, eip155:5042, solana | USDC | challenge detected | Currency exchange rates from the European Central Bank (about 30 currencies, back to 1999): latest or a given date, amou |
| [Smart Money Daily Brief](https://staging-next.superstables.com/s/x402-report.quanyida.workers.dev) | x402 | base | USDC | challenge detected | Daily smart-money brief for ETH/Base/Solana: 24h net asset changes across monitored onchain addresses with smart-money i |
| [store.advice-sky.net](https://staging-next.superstables.com/s/store.advice-sky.net) | x402 | base | USDC | challenge detected | Advice Sky.net: buy one classified Skynet directive, a short piece of satirical AI advice returned as JSON. Each paid ca |
| [Storm Station 247](https://staging-next.superstables.com/s/stormstation247.com) | x402 | base | USDC | challenge detected | Everything one weather instrument is reporting now: each figure with its unit, the raw observation, where it stands, its |
| [Straelo Relay](https://staging-next.superstables.com/s/relay.straelo.com) | x402 | base | USDC | challenge detected | Inspect DNS records, mail configuration, SPF and DMARC for a public domain in one request. |
| [SubmitCheck](https://staging-next.superstables.com/s/submitcheck.appin60.com) | x402 | base | USDC | challenge detected | Look up one launch directory by domain: live/dead/moved status on our Oct 2026 check, submit URL, free option (yes/badge |
| [SwarmIO Cloud](https://staging-next.superstables.com/s/ioswarm.io) | x402 | base | USDC | challenge detected | Live quotes for up to 8 symbols — stocks, ETFs, crypto pairs (BTC-USD), FX — price, session change and currency, in the  |
| [SweetAI](https://staging-next.superstables.com/s/sweetai.tiamatcrypto.com) | x402 | arbitrum, base, polygon, solana | USDC | challenge detected | Actionable BTC signal from our own live trading engine, with a position plan and exit reference. Call for a directional  |
| [taxpulse.theaslangroupllc.com](https://staging-next.superstables.com/s/taxpulse.theaslangroupllc.com) | x402 | bnb | USD1 | challenge detected | 529 withdrawal & rollover checker — LITE preview. Same deterministic engine as the full product: verdict + a one-line fe |
| [TradeSonar](https://staging-next.superstables.com/s/api.tradesonar.io) | x402 | base | USDC | challenge detected | Market-wide extreme funding (crowding / carry opportunities) |
| [Trading Lab OHLCV Integrity Check](https://staging-next.superstables.com/s/trading-lab-turnover-notes.vironnimo.chatgpt.site) | x402 | base | USDC | challenge detected | Checks up to 2000 buyer-supplied OHLCV rows for ordering, duplicates, OHLC consistency and optional continuous-interval  |
| [unfurly](https://staging-next.superstables.com/s/unfurly.xyz) | mpp | tempo | USDC | challenge detected | Link Unfurl API. Fetches an HTML page and returns Open Graph / Twitter Card / standard meta as JSON. |
| [Verif Entreprise FR](https://staging-next.superstables.com/s/api-production-24833.up.railway.app) | x402 | base, solana | USDC | challenge detected | Find a French company's SIREN from its name, optionally filtered by postcode or INSEE commune code. Returns up to 10 mat |
| [wtsp.dev](https://staging-next.superstables.com/s/wtsp.dev) | mpp, x402 | base, tempo | USDC | challenge detected | The carrier and line type of any number, from the numbering plan: the network its range was issued to, mobile, fixed lin |
| [x402 Doctor](https://staging-next.superstables.com/s/x402-doctor.fizzl.eu) | x402 | algorand:wghe2pwdvd7s12bl5faop20egyesn73ktic1qzkkit8=, base, solana, xrpl:0 | USDC | challenge detected | Does this x402 endpoint really deliver? x402 Doctor buys it once with the example input its own listing declares (at mos |
| [x402.getautomatedrcm.com](https://staging-next.superstables.com/s/x402.getautomatedrcm.com) | x402 | base | USDC | challenge detected | Healthcare text de-identification engine (demo endpoint — SYNTHETIC/TEST DATA ONLY, never send real PHI; nothing is stor |
| [x402helper.xyz](https://staging-next.superstables.com/s/x402helper.xyz) | x402 | arbitrum, base, bnb, eip155:1329, solana | USDC | challenge detected | Paid test endpoint — verifies that AI agents can successfully complete X402 micropayments |

## Reading the table

- challenge detected (live: true in the API): at our last probe, the endpoint returned HTTP 402 or another detected payment-challenge signal.
- no challenge detected (live: false): our last probe detected no payment challenge. Probe history is on each service page.
- not checked (live: null): not probed yet, or not an HTTP endpoint. Non-HTTP entries are listed but never probed.

[List a service](https://staging-next.superstables.com/submit) · [API reference](https://staging-next.superstables.com/docs.md) · [Homepage](https://staging-next.superstables.com/index.md)